A few weeks ago, my live-in boyfriend of three years left me. He had been pulling away and escaping, so I suppose I saw it coming. When we had our final one-on-one, he told me that he thinks something's wrong with him -- he's not happy with me, but he doesn't think he ever has been happy in his whole life.

I went through the stages of angry texts, begging for him back, etc. He always responded with an "I'm truly sorry but I need space. I don't know what will happen in the future."

Later on, I found out that he started seeing a psychiatrist for the first time. He has been diagnosed with post-traumatic stress syndrome from his time in the military and with a possible case of borderline personality as well. He has told me that he is a mess right now.

In researching these disorders, I understand his actions so much more and realize that he really DOES need space and I shouldn't fear for the future anymore. I love him enough to let him go and I love myself enough to want to heal whether it be with him or without him.

Here's what I'm doing. I wrote him a letter -- a paragraph long -- telling him how I feel. Basically, that "I think he is an amazing person and that I love him very much and want him to be happy. I told that I will give him all the space he needs. I said that I will always be here for him if he ever needs me because I don't turn my back on the people I care about. Then I wish him the best."

Is this too much? Will it be too much for him? Should I just cut off all contact with no reason? Is the letter a good idea? Should I amend it? Please advise.

Thanks!